Painting instrument



@a E, M BANDEN 1,886,853

PAINTING INSTRUMENT Filed July 17, 1950 2 Sheets-Sheet 1 Nov. 8, 1932. E, M, BARDE L PAINTING INSTRMENT Filed July 17, 1930 2 sheets-sheet 2 Patented Nov. 8, 1932 UNITI-:D STATES rare-Nr o-Frrcei EARL M. BARBER', oFDETRoiI'r; MIGHIGAMASSIGNOR ro PACKARD-'Moron GAR COMPANY, or nnrnorr', MICHIGAN, A 'ooRr'oRATIo'N oirV MGHGAN Yapplicati@ inea July 1f?, 1930; serialz Ne. 468,510;

My invention relates tov painting instruments and: more particularly toy guiding meansfor striping instruments.

`:Einstriping a work surface,l particularly 5 where a curved ridge of the work surface, suchl as awindow reveal or thelike, is utilized asa guiding memberdifliculty is experienced in keeping the line at the same distance from the. ridge at the curved portion as at th-e 1.0 straight portions thereof. The paintedk line is. very likely to be ragged and irregular at the curve. My invention is intended to ob:- viat'e these difficulties. v

An. object of my invention. is tofprovidey a device forpainting certain selected areasof worksurface.

Another object of my invention is to provide ya device'for painting straightand curved lines on. a Work surface. Y

Another object of my invention is to provide a stripingl instrument suitable for use inv conjunction with` indented portions of a work. surface, such. as automobile doors` and the like, to paint a uniform linev ata prede- 25 termined distance from the indentation: in

spite of` variations and irregularitiesin: the contour and profile ofthe work surface.

A still further object of my invention. isfto provide a means forpainting a curved line on aA Work surface adjacent to'both: straight and curved portions thereof so that thealine shall. be symmetrically spaced. with respect thereto and so` the line itself shall: be ofthe correct width and thickness and. cleair and sharply defined.

. @ther objects of my invention will appear iny the following description. of preferredembodimentstaken inconnectionwith the drawings:

Referring to the drawings, Fig. lis a view in perspective of my device as it appears while being used to paint' a line on a -portion of a work surface.` Y

Fig. 2l is a side elevational view ofthe device shownA in Fig. l;

Fig. 3 is an end elevational view of: the device* as it appears while in engagement with Vthe-work surface; v

Fig. 4,1 is a sectional view of one off the 5 guiding `membersof my device;l

F ig. 5' is a sectional view taken alongl the line 5.-5 ofFig. 2; Fig.. @f is a bottom1 plan view of the .device showing the various guide members. utilized, and- Fig. Z is a schematic diagram showingthe operation of a device constructed according tol my invention.

j Referring toy the drawings.w andi more particularly to-Figs. 1 and; 2, my deuicefis` shown '60 as ap pliedto and utilized' for painting awork suri'acesuchl as the window revealshownl and comprises an. instrument body l0! having a guide roller 1l. attachedf` theretof. The body isl preferably rectangular in shape and is recessed (Fig. 5).- to,` provide. channels and recesses wherein rotatably mounted gears 1-2 may belocated inorder to feed' paintrto l the workV surface. These gears are-.,preferably driven by meansof the roller V1.1 which, projects to. one side of the body; A: nozzle 154: isf resiliently engaged, on the@ body in. such a mannerthat the nozzle maintains an even pressure against the Hwork whenever itlis in Contact therewith.l Twor guide members l5 7'5 and. 16 aredisposed on` the side-ofthe body at anI angle both with reference toi-the horizontal and the'verticall planes (Fig-.2% The guides are oppositely disposed' and areprovided with convergin'gspring;pressed plung- 'sa ers for a purposeto be hereinafter explained. The-body is mounted upon: a shaft 2 1 which has eccentric engagementbymeans offthe off- .set 22 with-the L-shaped handle 23I=which is used. for supporting-the@ instrument against c5 the work., A. ball bearing 24e isfdisposedf on the handle between it and the offset in;l order that the instrument may/befreadily rotatable upon Y the handle; to,v properlyV position; itself with reference to the` Work.. The'7 halidleY 23 eo is engaged t'o the offset. 22fby means off. a nut' 25.` havingfanenten ded, portionf 26 :thread- 'edf intoitheoffset.

The paint isusuppliedfrom a@ container 31 ('Fi'g; 5) andisfed toA the", nozzle Mcthrough 95 channels 32and333radially andl'ongitudinal'- ly located in the handle, throughlthefrans'- versechannel 34.' in the? offset, througflrthe transverse channel; 35` inthe=body,1thrnngih Y the chamber? ini which theA coacting-"geans l2 v|300 of the gear pump are located and through the longitudinal opening 37 in the shaft 38 to and out of the nozzle 14.

Ordinarily, in order to hold a nozzle at the proper distance from a guiding member of the work surface, it is necessaryto employ either two guiding members on the instrument spaced at some appreciable distance apart or a large roller of sufficient size to prevent the instrument from Wobbling with respect to the work. If a single large guide or a plurality of guides are used and the instrument is passed along a curved portion of the ridge of the work, a wobbling motion may be impressedon the instrument and transmitted to the work by reason of the irregular engagement of the guide'member of the instrument with the ridge in the Work surface or other guiding means. If a single guide, large enough to engage the ridge at two `spaced points,or two or more spaced guide members are used, the radius of curvature R (Fig. 7) measured from a point equidistant between the two contacting points or guiding members 7l and 7 2, and on a line 73 joining them, becomes less, as the instrument describes an arc, than the radius of curvature R1 lof the ridge 74 in the work surface, and the nozzle, and line 75 described by the nozzle, are drawn in toward the center of the curvature and nearer to the inner edge of the ridge of the work surface, thereby destroying the symmetry of the line with respect to the ridged portion of the work.

In order to eliminate this difficulty I have provided resilient guiding members, of which there are preferably two in number, in place of one large guiding member or two rigidly mounted, spaced guiding members. These guiding members are preferably comprised of a cylinder l5 (Fig. 4) in which is located a plunger 17 havingv a rounded outer end and an enlarged inner end which is adapted to constitute a flange upon which a spring 43 may be engaged. The end of the cylinder is closed by means of a threaded cap 44 having a portion 45 projecting inwardly from Y its inner endto constitute a guide for the spring 43. The cap is arranged for longitudinal adjustment within the cylinder in order to provide any desired pressure on the plunger.

The instrument is `applied to the work by engaging the roller against the side of the ridge in the work surface and applying the tWo resilient guide members so that the plungers rest against the bottom of the ridge at the junction of the ridge and the plane of the work surface. rlhe nozzle rests on t-he ridge or the work surface in accordance `with its selected position with reference to the instrument body 10.

Y When the instrument is held perpendicular to the plane of the work surface, the nozzle is located at the. proper position with reference to the work surface to define a suitable stripe thereon when the instrument is moved along the ridge.

lVhen the instrument encounters a. curve in the ridge the spring of the forward.A guide member is compressed. When the center line of the instrument enters into the curve the nozzle begins to move also in a curve and the following guide member is also compressed so that the pressure of one guide member is balanced against the pressure of the other. This equal pressure of the guiding members permits the roller to accurately space the nozzle with reference to the ridge in the work surface so that the nozzle is at the same distance from the edge of the ridge when the instrument is at a curve as it is when the instrument is at a straight portion of the ridge. The roller, the location of which is indicated by the arrow 7 6- in Fig. 7, then becomes the sole spacing means and the line 77defined by the nozzle is properly spaced from the ridge or other guiding member 74.

When the leading guide member reaches a straight portion of the ridge the spring in the cylinder is extended and the plunger continues to engage the ridge in order to constitute a steadying means for the instrument. After the center line of the instrument has passed from the curve into the straight portion of the ridge, the following plunger is also extended as it passes out of the curve and the instrument is held with its nozzle at the correct distance from the edge of the ridge.

A painting instrument, made according to my invention, defines symmetrically disposed curves which are spaced at the same distance from the curves of the ridge or other guiding means of the work surface, without irregularities, and also defines straight lines along the straight portions of the work surface guiding means.

The instrument operates quickly and easily and does not need a highly skilled operator to take care of the machine or operate it.

While I have herein described in some de- ;tail a specific embodiment of my invention,

as it will be apparent that changes may be made therein without departing from the s spirit or scope of'my invention.

IVhat I claim is:

l. In combination with a painting instrument adapted for painting a ridged work surface and comprising fluid holding and fluid .distributing means, a guide for engaging the ridge in the work surface, and additional guiding means for engaging the ridge portion of the work surface comprising angularly extending springpressed plungers, said' plungers being arranged one in advance of another behind said guide.

2. In combination With a painting instrument adapted for painting a ridged Work surface and comprising fluid holding and iiuid distributing means, a guide roller for engaging the ridge in the Work surface, and additional guiding means comprising a pair of resiliently mounted guides arranged one in advance of the roller and the other at the rear of the roller.

3. In combination with a painting instrument adapted for painting a ridged Work surface and comprising fluid holding and fluid distributing means, a guide roller for engaging the ridge in the Work surface and for actuating the fluid distributing means,

and additional guiding means comprising a pair of resiliently mounted plungers, disposed on the instrument at an angle With reference to both the horizontal and the vertical planes, for engaging the ridge, one of said plungers being in advance of the roller and the other of said plungers being at the rear of the roller.

4. In combination With a painting instrument adapted for painting a` ridged Work surface comprising fluid holding and fluid distributing means, a roller guide for engaging the ridge of the Work surface to partially guide the instrument and a pair of additional resiliently mounted guides spaced in advance of and at the rear of the roller.

5. In combination with a paintingV instrument adapted for painting a ridged Work surface comprising fluid holding and fluid distributing means, a roller for engaging the Work surface and a pair of guides spaced one on each side of the roller comprising converging spring pressed plungers.

(i. In an instrument adapted for ypainting a Work surface having a curving ridge portion, a body, a nozzle carried by the body for applying fluid directly upon the Work surface, a supporting and guiding roller for the body arranged substantially beside the nozzle, said roller engaging the side of the ridge portion of the surface to guide the body, and la pair of resiliently mounted guides carried by the body, said guides having their bearing ends normally aligning With the roller in the direction of the instrument travel and adapted to engage a side of the ridged portion of the Work surface, the bearing ends of said resiliently mounted guides varying in their relation With the roller when operating on a curve to maintain the nozzle outlet uniformly spaced from the guiding ridged surface. y

7 In a painting instrument, a body having fluid dispensing means associa-ted therewith, a supporting roller for the body, the side of said roller guiding the same, and a pair of spring-pressed guide members carried by the body, said guide members having their bearing surfaces normally in alignment with fthe guiding side of the roller in the t 9. In combination With an instrument for applying paint stripes to surfaces having a ridge thereon, a roller for engaging an edge portion of the ridge of the surface to be striped to partially guide the instrument, and a. resilient plunger for engaging the surface at the base ofthe ridge on the same side engaged by the roller for furnishing additional guide means for the instrument, said plunger being spaced from the axis of the roller in a direction normal thereto.

l0. In combination With an instrument for applying stripes to surfaces having a ridge f thereon, a guide roller for engaging the ridge portion of a surface to be striped, and a spring pressed guide plunger for engaging the same face of the ridge portion of the surface engaged by the roller, said guide plunger being spaced from the axis of the roller in a direction normal thereto and extending at an oblique angle laterally of the roller and of the roller axis.

In testimony whereof I aflix my signature.

EARL M. BARDEN. 

